//扩展mui.showLoading
    //显示加载框
    var showLoading = function(message,type) {

            var html = '';
            html += '<i class="mui-spinner mui-spinner-white"></i>';
            html += '<p class="text">' + (message || "数据加载中") + '</p>';

            //遮罩层
            var mask=document.getElementsByClassName("mui-show-loading-mask");
            if(mask.length==0){
                mask = document.createElement('div');
                mask.classList.add("mui-show-loading-mask");
                document.body.appendChild(mask);
                mask.addEventListener("touchmove", function(e){e.stopPropagation();e.preventDefault();});
            }else{
                mask[0].classList.remove("mui-show-loading-mask-hidden");
            }
            //加载框
            var toast=document.getElementsByClassName("mui-show-loading");
            if(toast.length==0){
                toast = document.createElement('div');
                toast.classList.add("mui-show-loading");
                toast.classList.add('loading-visible');
                document.body.appendChild(toast);
                toast.innerHTML = html;
                toast.addEventListener("touchmove", function(e){e.stopPropagation();e.preventDefault();});
            }else{
                toast[0].innerHTML = html;
                toast[0].classList.add("loading-visible");
            }
    };



//隐藏加载框
var hideLoading = function() {
    var mask=document.getElementsByClassName("mui-show-loading-mask");
    var toast=document.getElementsByClassName("mui-show-loading");
    if(mask.length>0){
        mask[0].classList.add("mui-show-loading-mask-hidden");
    }
    if(toast.length>0){
        toast[0].classList.remove("loading-visible");
    }
}